Which innovative marketing campaign is credited with transforming the young adult literature market and creating the template for modern book franchise promotion?

In the competitive world of book publishing, marketing campaigns can make or break an author's success. From unconventional publicity stunts to innovative digital strategies, publishers have employed fascinating tactics to turn books into bestsellers. This trivia question explores one of the most successful and revolutionary marketing approaches that transformed how literature reaches consumers. Test your knowledge about the intersection of marketing innovation and literary success!

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Scholastic's midnight release parties and embargoed shipments for the Harry Potter series
Random House's interactive website and character blogs for 'The Hunger Games'
Penguin's social media influencer campaign for John Green's 'The Fault in Our Stars'
HarperCollins' nationwide treasure hunt promotion for 'A Series of Unfortunate Events'